Magnetic separator



(No Model.)

0. 0. BARTLETT.

MAGNETIC SEPARATOR.

Patentd Sept; 21,- 1886.

WITNESSES:

H m m w zav fi/s wa y TENS. PholoLilhogrxphar. Washingmn.

UNITED STATES PATENT OFFICE.

CHARLES O. BARTLETT, CLEVELAND, OHIO.

MAGNETIC SEPARATOR.

- SPECIFICATION forming part of Letters Patent No. 349,422, datedSeptember 21,1886,

Application filed April 12, 1886. Serial No. 198,583.

I all whom, it may concern:

Be it known that I, CHARLES O. BARTLETT, a citizen of the United States,residing at Cleveland, countyof Cuyahoga, andState of Ohio, haveinvented certain new and useful Improvements in Magnetic Separators; andI do hereby declare the following to be a description of the same, andof the manner of constructing and using the invention, in such full, :0clear, concise, and exact terms as to enable any person skilled in theart to which it appertains to construct and use the same, referencebeinghad to the accompanying drawings, forming a part of thespecification, the principle of the invention being herein explained,and the best mode in which Ihave contemplated applying that principle,so as to distinguish it from other inventions.

My invention consists of a magnetic separator. It can be used inseparating metallic particles from grain, or in clarifying otherarticles as they pass into a chute from one location to another, or aredischarged from one receptacle into another. 2 In the drawings, Figure 1is a vertical longitudinal section. Fig. 2 is a plan. Fig. 3is a detailview, hereinafter referred to.

A are the side walls of the chute, and of any desired height. B, G, andD are distinct sec- 0 tions of the bottom of the chute. The chute beingnormally inclined, sections B and D are substantially in the same plane,and section 0, located between the two latter, is depressed, so that itsupper surface plane lies below the upper surface planes severally ofsections B and D. Section B is at the receiving end of the chute, andsection D is at the discharge end. The lower end of section B, as itmeets the upper end of section 0, forms the wall 0, 0 which may beeither abrupt or sloping, as preferred. The upper end of section D,whereit meets the lower end of section 0, forms the wall (I, which ispreferably abrupt. Section G is provided with slots 6, through whichpro- 4 5 ject upwardly the free ends of a series of horseshoe-magnets,E, whose connected ends project below the under surface of said section.Said free ends of the magnets project upwardly from the upper surface ofsection 0 for only a portion of the height of the sides A, therebyleaving a free space between the said ends of the (No model.)

magnets and the common plane of the tops of the said sides. Freechannels f, for the passage of grain, lie between the said series of theprojecting free ends of the magnets, and also between each wall A andits contiguous magnet.

The operation of my invention as thus described is as follows: As thegrain or other article enters upon'the.receiving-section B, any heavy ormetallic substance in it would naturally tend to fall down over the wall0 upon the depressed section 0, and there be arrested by the magnets,and should such fallen substance happen to pass .unarrested throughchannels f it would naturally be stopped at wall d,- or, should anyheavy substance pass over the tops of the free ends of the said magnets,there is still a probability of its falling to the surface of section 0before it reaches Wall (1-, and so be stopped by said wall. Any metallicsubstance mixed in with entering grain, whether falling at c or not,would be exposed to be arrested in its passage by the magnets; or,should it happen to pass them, it might afterward fall sufficiently tobe stopped by wall (I, and as such substancesme tallic or otherwisearestopped by the magnets or stopped by wall (I, and'so accumulate, theycan be readily removed therefrom at any time by the temporary arrest forthat purpose of the discharging substance. If desired, I may form alongitudinal convex partition, 9, centrally located between each twomagnets, so

as to deflect the metallic particles in channels thereby formed betweenthe magnets, and close to the latter, so that one magnet only of apairmay attract such metallic substances. Fig. 3 is a detail view intransverse section repre senting such a construction.

W'hat, therefore, I claim is 1. The combination, with asection of achute provided with magnets, of an anterior section of the bottom ofsaid chute, located in aplane passing over the plane of themagnet-section, substantially as set forth.

2. The combination, with a section of a chute provided with magnets, ofa posterior section of the bottom of said chute, located in a planepassing over the plane of the magnet section, substantially as setforth.

3. The combination, with a section of a chute provided withupwardly-projecting magnets, said magnets projecting only partiallybetween the upper surface of said section and the plane of the tops ofthe side walls of the chute, of a section anterior to the saidmagnet-section, and a section posterior to said magnet-section,saidanterior and posterior sections located in planes passing over the planeof the said magnetsection, substantially as set forth.

4. The combination, with the intermediate section located in acorresponding plane depressed below the planes of the two othersections, said intermediate plane provided with inwardly-projectingmagnets, substantially as set forth.

6. In a chute, the combinationywith two bottom sections located in.substantially the same plane with each other, and an intermediatebottom section connecting the same, the plane of said intermediatesection being depressed below the plane of the two other said sections,of a magnet or magnets projecting upward through said depressed section,substantially as set forth.

. In testimony that I claim the foregoing to be my invention I havehereunto set my hand this 1st day of April, A. D. 1886.

CHARLES O. BARTLETT.

\Vitnesses:

T. B. HALL, J NO. G. HALL.

